–noun 1. any of various alloys fused and applied to the joint between metal objects to unite them without heating the objects to the melting point.
2. anything that joins or unites: the solder of their common cause.
–verb (used with object) 3. to join (metal objects) with solder.
4. to join closely and intimately: two fates inseparably soldered by misfortune.
5. to mend; repair; patch up.
–verb (used without object) 6. to unite things with solder.
7. to become soldered or united; grow together.